Discuss Docker DCA Exam Topic 5 Question 86

You created a new service named 'http' and discover it is not registering as healthy. Will this command enable you to view the list of historical tasks for this service?

Solution: 'docker ps http'

AYes

BNo

Suggested Answer: B

The command 'docker ps http' is not the correct command to view the list of historical tasks for a service in Docker1. The 'docker ps' command is used to list containers1. If you want to view the list of historical tasks for a service, you should use the 'docker service ps' command2. This command lists the tasks that are running as part of the specified services and also shows the task history2. Therefore, to view the list of historical tasks for the 'http' service, you should use the command 'docker service ps http'2.

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20 comments · newest first

Francoise 10 months ago

Wait, are you sure? I thought it might work!

Luther 11 months ago

Yeah, I agree, it won't show historical data.

Patria 11 months ago

I thought 'docker ps' only shows running containers?

Jesusita 11 months ago

Definitely a "No" on that one!

Malissa 11 months ago

That's not the right command for historical tasks.

Candida 12 months ago

This seems similar to a practice question I did, and I believe the answer is 'No' because 'docker ps' doesn't show historical tasks.

Arthur 12 months ago

I might be mistaken, but I thought 'docker ps' only lists active containers, not the historical ones.

Freeman 12 months ago

I remember practicing a question about checking service health, and I don't think 'docker ps' is the right command for that.

Margurite 1 year ago

I think 'docker ps' shows running containers, but I'm not sure if it includes historical tasks for a service.

Rasheeda 1 year ago

I'm pretty confident this is a "No" answer. The "docker ps" command is for listing running containers, not historical tasks for a specific service. To view that kind of historical information, I'd need to use a different Docker command.

Maurine 1 year ago

Okay, I think I've got this. The "docker ps" command is used to list running containers, but it won't show me the historical tasks for a specific service. I'll need to look into other Docker commands that can provide that kind of historical information.

Kent 1 year ago

I'm not sure about this one. The question mentions a "service named 'http'" but the solution talks about "docker ps http". I'm a bit confused on how those relate.

Vernice 1 year ago

Hmm, I think the key here is that the question is asking about historical tasks for the service, not just the current status. The "docker ps" command might show me the current running containers, but I'm not sure if that would include historical tasks.

Yen 1 year ago

I remember learning about the deployment server in class, and I think it can push apps to both universal forwarders and Splunk Cloud. I'll go with A and B just to be safe.

Skye 2 years ago

So, it's B) No, right?

Arlette 2 years ago

Yeah, it doesn't seem like the right command for viewing historical tasks.

Jerry 2 years ago

I don't think so. 'docker ps' lists running containers.

Arletta 2 years ago

Do you think 'docker ps http' shows historical tasks?

Skye 2 years ago

I agree, it's a little confusing.

Jerry 2 years ago

The question seems tricky.

Docker DCA Exam - Topic 5 Question 86 Discussion